[Bug sanitizer/81097] UBSAN: false positive for not existing negation operator and a bogus message

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81097

--- Comment #5 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Tue Jun 20 12:46:46 2017
New Revision: 249407

URL: https://gcc.gnu.org/viewcvs?rev=249407&root=gcc&view=rev
Log:
2017-06-20  Richard Biener  <rguent...@suse.de>

        PR middle-end/81097
        * fold-const.c (split_tree): Fold to type before negating.

        * c-c++-common/ubsan/pr81097.c: New testcase.

Added:
    trunk/gcc/testsuite/c-c++-common/ubsan/pr81097.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/fold-const.c
    trunk/gcc/testsuite/ChangeLog